# DIMALTTZ System Variable [GstarCAD 2018](Help%20System/GSTARCAD/2018/Index.md) → [System Variables](Help%20System/GSTARCAD/2018/System%20Variables/(System%20Variables).md) → [D](Help%20System/GSTARCAD/2018/System%20Variables/D/(D).md) ## Function Description: The DIMALTTZ system variable is used to control zero suppression for tolerance. | | | | --- | --- | | Type | Integer | | Saved in | Drawing | | Initial value | 0 | | Range | 0 \~ 15 | ## System Variable Value: **0:** suppress zero feet and zero inch **1:** include zero feet and zero inch **2:** include zero feet and suppress zero inch **3:** include zero inch and suppress zero feet To suppress leading or trailing zeros. Add the following values to one of the preceding values: **4:** suppress leading zero **8:** suppress trailing zero --- ## Other versions with matching text [GstarCAD 2016](../../../2016/System%20Variables/D/DIMALTTZ%20System%20Variable.md) · [GstarCAD 2017](Help%20System/GSTARCAD/2017/System%20Variables/D/DIMALTTZ%20System%20Variable.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/System%20Variables/D/DIMALTTZ%20System%20Variable.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/System%20Variables/D/DIMALTTZ%20System%20Variable.md) · [GstarCAD 2021](Help%20System/GSTARCAD/2021/System%20Variables/D/DIMALTTZ%20System%20Variable.md) · [GstarCAD 2022](Help%20System/GSTARCAD/2022/System%20Variables/D/DIMALTTZ%20System%20Variable.md)